Video taken by scientists at Miami University in Ohio shows, through
time-lapse photography, the process of a wood frog unfreezing.

This wood
frog, which lives in woods all over the Washington area and ranges as far
north as Alaska, is one of a few animals with the ability to freeze solid
during the winter and thaw out again unharmed. The secret is a process by
which the frogs fill their cells with natural antifreeze, which keeps the
cells unfrozen even as the space around them fills with ice.

Scientists are
trying to mimic this process in human organs, with the hope of extending
the time that transplant organs can be kept outside the body.